CN104764973B - Induction type wiring harness tester and detection method - Google Patents
Induction type wiring harness tester and detection method Download PDFInfo
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- CN104764973B CN104764973B CN201510158467.3A CN201510158467A CN104764973B CN 104764973 B CN104764973 B CN 104764973B CN 201510158467 A CN201510158467 A CN 201510158467A CN 104764973 B CN104764973 B CN 104764973B
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Abstract
The present invention relates to a kind of induction type wiring harness tester and detection methods, the system includes signal generator, inductive receiving circuit, frequency-selecting detection circuit, audio oscillating circuit and LED display circuit, the output end of the signal generator is connected with one end of harness to be measured, the other end of the harness to be measured is connected to the input terminal of the inductive receiving circuit, the output end of the inductive receiving circuit is connected to the input terminal of the frequency-selecting detection circuit, the output end of the frequency-selecting detection circuit is separately connected with the input terminal of the audio oscillating circuit and the input terminal of LED display circuit.The present invention in harness one end to be measured by being passed through detection signal, other end access inductive receiving circuit is detected, and show failure using LED display circuit, it can not only determine failure harness, it can determine specific a certain conducting wire disconnection and breakpoint location in harness simultaneously, improve the detection efficiency and precision of harness.
Description
Technical field
The present invention relates to a kind of induction type wiring harness tester and detection methods.
Background technology
Currently, as China's informatization and transformation are increasingly extensive, the covering of network is ubiquitous.Each list
Position and department LAN are related to numerous users, and most local area network terminal is connected up using twisted-pair feeder, in LAN
Daily maintenance in the connection state of cable be one of the main contents having to check for.Currently, existing cable breakpoint in the market
Detector is the contact type measurement method that uses mostly, more accurate when detecting single line, but for the inspection of the harness in LAN
It surveys then laborious, time-consuming and inefficient；Also some contactless measuring instruments such as incude detector, in the detection of harness
In can only determine certain root conducting wire in harness, but not can determine that is which root conducting wire in harness disconnects the (line of general cable
Have 8 conducting wires in beam), whole cable can only be replaced in repair.
Therefore, how to provide a kind of can accurately and accurately judge the break-make of conducting wire in harness and show its specific location
Induction type wiring harness tester and detection method be those skilled in the art's technical problem urgently to be resolved hurrily.
Invention content
A kind of induction type wiring harness tester of present invention offer and detection method, to solve the above technical problems.
In order to solve the above technical problems, the present invention provides a kind of induction type wiring harness tester, including signal generator, sense
Answer receiving circuit, frequency-selecting detection circuit, audio oscillating circuit and LED display circuit, the output end of the signal generator with
One end of harness to be measured is connected, and the other end of the harness to be measured is connected to the input terminal of the inductive receiving circuit, the sense
The output end of receiving circuit is answered to be connected to the input terminal of the frequency-selecting detection circuit, the output end of the frequency-selecting detection circuit and institute
The input terminal of the input terminal and LED display circuit of stating audio oscillating circuit is separately connected.
Preferably, the signal generator uses microcontroller.
Preferably, the inductive receiving circuit is the amplifier of passband.
Preferably, the frequency-selecting detection circuit is phase-locked loop circuit.
Preferably, the phase-locked loop circuit will be respectively converted into induction signal logic level signal, and respectively drive described
Each LED light in LED display circuit.
Preferably, the phase-locked loop circuit converts logic level signal described in each road to all-pass trigger signal, it is described complete
Logical trigger signal triggers the audio oscillating circuit.
Preferably, the audio oscillating circuit is controllable dual-audio oscillator.
Preferably, the input terminal of the inductive receiving circuit is hand-held inductive connector.
The present invention also provides a kind of induction type wiring harness test methods, using induction type wiring harness test as described above system
System, includes the following steps：If the signal generator generates main line scanning signal frequency, and it is corresponding to be respectively connected to harness to be measured
In conducting wire, the inductive receiving circuit receives the transmitting induction of signal of the harness to be measured, and is sent into the frequency-selecting after amplifying
Detection circuit, the frequency-selecting detection circuit will be respectively converted into logic level signal to induction signal, for driving the audio to shake
Swing circuit and LED display circuit.
Preferably, the signal generator generates the signal of different frequency using microcontroller, the amplitude for adjusting the signal is used
With the transmitting range of setting signal, the signal receiving strength of the inductive receiving circuit is sent out according to the signal of the signal generator
Range is penetrated to be adjusted.
Compared with prior art, a kind of induction type wiring harness tester provided by the invention and detection method, the system packet
Include signal generator, inductive receiving circuit, frequency-selecting detection circuit, audio oscillating circuit and LED display circuit, the signal hair
The output end of raw device is connected with one end of harness to be measured, and the other end of the harness to be measured is connected to the inductive receiving circuit
Input terminal, the output end of the inductive receiving circuit are connected to the input terminal of the frequency-selecting detection circuit, the frequency-selecting detection electricity
The output end on road is separately connected with the input terminal of the audio oscillating circuit and the input terminal of LED display circuit.The present invention is logical
It crosses and is passed through detection signal in harness one end to be measured, other end access inductive receiving circuit is detected, and utilizes LED display circuit
It shows failure, can not only determine failure harness, while can determine specific a certain conducting wire disconnection and breakpoint bit in harness
It sets, improves the detection efficiency and precision of harness.
Description of the drawings
Fig. 1 is the structure diagram of the induction type wiring harness tester of the embodiment of the invention.
In figure：10- signal generators, 20- inductive receiving circuits, 30- frequency-selectings detection circuit, 40- audios oscillating circuit,
50-LED display circuits, 60- harness to be measured.
Specific implementation mode
In order to more state the technical solution of foregoing invention in detail, being exemplified below specific embodiment proves that technology is imitated
Fruit；It is emphasized that these embodiments are not limited to limit the scope of the invention for illustrating the present invention.
A kind of induction type wiring harness tester provided by the invention, as shown in Figure 1, being connect including signal generator 10, induction
Receive circuit 20, frequency-selecting detection circuit 30, audio oscillating circuit 40 and LED display circuit 50, the signal generator 10 it is defeated
Outlet is connected with one end of harness 60 to be measured, and the other end of the harness 60 to be measured is connected to the defeated of the inductive receiving circuit 20
Enter end, the output end of the inductive receiving circuit 20 is connected to the input terminal of the frequency-selecting detection circuit 30, the frequency-selecting detection
The output end of circuit 30 is separately connected with the input terminal of the audio oscillating circuit 40 and the input terminal of LED display circuit 50.
The present invention in 60 one end of harness to be measured by being passed through detection signal, and other end access inductive receiving circuit 20 is detected, and profit
Failure is shown with LED display circuit 50, can not only determine failure harness, while can determine specific a certain conducting wire in harness
Disconnection and breakpoint location, improve the detection efficiency and precision of harness.In addition to this, which also may be used
Other kinds of wire harness is accurately measured.
Preferably, the signal generator 10 uses microcontroller, it is single for having 8 conducting wires in each harness 60 to be measured
Piece machine generates the signal of f1-f8 different frequencies, corresponding to be linked into 8 conducting wires of harness 60 to be measured (line sequence is corresponding with frequency),
Wherein, conducting wire is equivalent to transmitting antenna.
Preferably, the inductive receiving circuit 20 is the amplifier of passband, specially high frequency small-signal amplifier, use
In the reception and amplification of signal.
Preferably, the frequency-selecting detection circuit 30 is phase-locked loop circuit, and in harness 60 normal (no broken string) to be measured, induction
All respective frequencies signals are contained in the signal that receiving circuit 20 inputs, phase-locked loop circuit turns respective frequencies signal respectively
It is changed to logic level signal, respectively drives and open each LED light in LED display circuit 50；Simultaneously by each road logic level
Signal is converted to all-pass trigger signal, and audio oscillator circuit 40 is opened in all-pass trigger signal triggering, preferably, the audio
Oscillating circuit 40 is controllable dual-audio oscillator, sends out double-audio signal when harness 60 to be measured is normal, indicates harness 60 to be measured
Normally；
If having one or several conductor cord disconnections in harness 60 to be measured, will lack in inductive receiving circuit 20 one or
Several respective frequencies signals, LED display circuit 50 send out breakdown of conducting wires prompt；It is defeated to there will not be all-pass trigger signal simultaneously
Going out, the loud speaker of audio oscillating circuit 40 prompts breakdown of conducting wires point, directly reasonably can be repaired and be reset without prompt tone,
It saves time and cost.
Preferably, the input terminal of the inductive receiving circuit 20 is hand-held inductive connector, hand-held inductive connector is existed
It is moved on harness 60 to be measured, you can realize conducting wire disconnection detection, and can determine the breakpoint location of conducting wire.
The present invention also provides a kind of induction type wiring harness test methods, using induction type wiring harness test as described above system
System, includes the following steps：If the signal generator 10 generates main line scanning signal frequency, and it is right to be respectively connected to harness 60 to be measured
In the conducting wire answered, the inductive receiving circuit 20 receives the transmitting induction of signal of the harness 60 to be measured, and is sent into after amplifying
The frequency-selecting detection circuit 30, the frequency-selecting detection circuit 30 will be respectively converted into logic level signal to induction signal, for driving
Move the audio oscillating circuit 40 and LED display circuit 50.
Preferably, the signal generator 10 generates the signal of different frequency using microcontroller, the amplitude of the signal is adjusted
To the transmitting range of setting signal, the signal receiving strength of the inductive receiving circuit 20 is according to the signal generator 10
Signal transmitting range is adjusted.
It should be noted that inductive receiving circuit 20 detects harness when there is no problem, it can only illustrate all in harness lead
Line be connection, but not necessarily line sequence be to.
New harness is connected, in addition to detecting break-make, there is a need to detection line sequence.It is connect respectively at 60 both ends of harness to be measured
The line sequence for entering signal generator 10 detects delivery outlet and hand hold answers the input port of detection tabs, the LED for observing both sides to light
Sequence to determine, whether line sequence correct in cable.This Some principles and structure are similar with common harness detector, herein no longer
It repeats.
In addition, when carrying out fault detect to original harness, line sequence detection need not be generally carried out, as long as promptly looking for
To cable and judge the break-make situation of the cable.
In conclusion a kind of induction type wiring harness tester provided by the invention and detection method, the system include signal
Generator 10, inductive receiving circuit 20, frequency-selecting detection circuit 30, audio oscillating circuit 40 and LED display circuit 50, the letter
The output end of number generator 10 is connected with one end of harness 60 to be measured, and the other end of the harness 60 to be measured is connected to the induction
The input terminal of receiving circuit 20, the output end of the inductive receiving circuit 20 are connected to the input of the frequency-selecting detection circuit 30
It holds, the input terminal and LED display circuit 50 of the output end of the frequency-selecting detection circuit 30 and the audio oscillating circuit 40
Input terminal is separately connected.The present invention does not need two terminated lines, only by being passed through detection signal, the other end in 60 one end of harness to be measured
It answers detection tabs to be detected by hand hold, and failure is shown using LED display circuit 50, can not only determine fault wire
Beam, while can determine specific a certain conducting wire disconnection and breakpoint location in harness, improve the detection efficiency and essence of harness
Degree, and it is easy to use, quick, accurate.
Obviously, those skilled in the art can carry out invention spirit of the various modification and variations without departing from the present invention
And range.If in this way, these modifications and changes of the present invention belong to the claims in the present invention and its equivalent technologies range it
Interior, then the present invention is also intended to including these modification and variations.
Claims (8)
1. a kind of induction type wiring harness tester, which is characterized in that including signal generator, inductive receiving circuit, frequency-selecting detection
Circuit, audio oscillating circuit and LED display circuit, the output end of the signal generator are connected with one end of harness to be measured,
The input terminal of the inductive receiving circuit is hand-held inductive connector, and the other end of the harness to be measured is wirelessly connected to the sense
The input terminal of receiving circuit, the output end of the inductive receiving circuit is answered to be connected to the input terminal of the frequency-selecting detection circuit, institute
The output end and the input terminal of the audio oscillating circuit and the input terminal of LED display circuit for stating frequency-selecting detection circuit connect respectively
It connects；The frequency-selecting detection circuit is phase-locked loop circuit；The input terminal of the inductive receiving circuit is hand-held inductive connector；It is described
If signal generator generates main line scanning signal frequency, and is respectively connected in the corresponding conducting wire of harness to be measured；Inductive receiving circuit
All respective frequencies signals are contained in the signal of input.
2. induction type wiring harness tester as described in claim 1, which is characterized in that the signal generator uses monolithic
Machine.
3. induction type wiring harness tester as described in claim 1, which is characterized in that the inductive receiving circuit is high passband
The amplifier of band.
4. induction type wiring harness tester as described in claim 1, which is characterized in that the phase-locked loop circuit will be to induction signal
It is respectively converted into logic level signal, and respectively drives each LED light in the LED display circuit.
5. induction type wiring harness tester as claimed in claim 4, which is characterized in that the phase-locked loop circuit will be described in each road
Logic level signal is converted into all-pass trigger signal, and the all-pass trigger signal triggers the audio oscillating circuit.
6. induction type wiring harness tester as described in claim 1, which is characterized in that the audio oscillating circuit is controllable double
Audio oscillator.
7. a kind of induction type wiring harness test method, using the induction type wiring harness test as described in any one of claim 1~6
System, which is characterized in that include the following steps：If the signal generator generates main line scanning signal frequency, and is respectively connected to
In the corresponding conducting wire of harness to be measured, the inductive receiving circuit receives the transmitting induction of signal of the harness to be measured, and amplifies
After be sent into the frequency-selecting detection circuit, the frequency-selecting detection circuit will be respectively converted into logic level signal to induction signal, be used for
Drive the audio oscillating circuit and LED display circuit.
8. induction type wiring harness test method as claimed in claim 7, which is characterized in that the signal generator uses microcontroller
The signal for generating different frequency, adjusts the amplitude of the signal to the transmitting range of setting signal, the inductive receiving circuit
Signal receiving strength is adjusted according to the signal transmitting range of the signal generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158467.3A CN104764973B (en) | 2015-04-03 | 2015-04-03 | Induction type wiring harness tester and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158467.3A CN104764973B (en) | 2015-04-03 | 2015-04-03 | Induction type wiring harness tester and detection method |
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| Publication Number | Publication Date |
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| CN104764973A CN104764973A (en) | 2015-07-08 |
| CN104764973B true CN104764973B (en) | 2018-08-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223537B (en) * | 2015-11-06 | 2018-08-28 | 国网重庆市电力公司电力科学研究院 | A kind of electric energy meter is visited one house after another detection device and method |
| CN106918739A (en) * | 2015-12-25 | 2017-07-04 | 苏州宝时得电动工具有限公司 | Broken wire detection system |
| CN107064566A (en) * | 2017-06-12 | 2017-08-18 | 上海华岭集成电路技术股份有限公司 | A kind of method for protecting integrated circuit testing connecting line |
| CN107340451A (en) * | 2017-08-28 | 2017-11-10 | 镇江金海创科技有限公司 | A kind of General Electric's wire harness device for fast detecting and method |
| CN109116177A (en) * | 2018-06-11 | 2019-01-01 | 格力电器（武汉）有限公司 | Method and device for detecting line sequence of connecting line and computer storage medium |
| CN110763978A (en) * | 2019-10-15 | 2020-02-07 | 四川豪威尔信息科技有限公司 | Method for protecting integrated circuit test connecting line |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87103474A (en) * | 1987-05-14 | 1988-11-30 | 孙盛典 | Cable wire-distinguishing equipment |
| CN2069569U (en) * | 1990-05-25 | 1991-01-16 | 刘正兴 | Numeral speedy wire checking instrumest |
| CN102890235B (en) * | 2011-07-18 | 2015-09-02 | 西门子公司 | A kind of fault detection method and device |
| CN202886528U (en) * | 2012-11-12 | 2013-04-17 | 江苏省电力公司无锡供电公司 | Test device for identifying high-voltage cables |
| CN203117345U (en) * | 2013-02-01 | 2013-08-07 | 西安秦骊成套电器有限公司 | Circuit detecting grounding state of operating cable via high-frequency signal injection |
| CN104155570A (en) * | 2014-07-09 | 2014-11-19 | 国家电网公司 | Cable checking device |
| CN204495947U (en) * | 2015-04-03 | 2015-07-22 | 苏州经贸职业技术学院 | Induction type wiring harness tester |
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